Perhaps you should try some spelling variations:
transport data » transport demand
transfer 3 » transfer _, transfer 4, transfer 3.2
transfer a » transfer _, transfer 4, transfer der
ice mass » ice masses, ice caps
data map » data mart, data mean
bus ice » bts ice, bus ride, bus line
luis a » luis f, luis c

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( bus ice mass ((transfer 3) OR (transfer a)) cao ) OR ( luis a road transport data map ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( bus ice mass ((transfer 3) OR (transfer a)) cao ) or ( luis a road transport data map ))~".
• Adding a wildcard symbol may retrieve word variants: (( bus ice mass ((transfer 3) OR (transfer a)) cao ) or ( luis a road transport data map ))*.